2:54 a.m.
Dear All,
Hey everyone, I have some questions regarding the dms-info.c file.
As for this function:
static void prv_get_container_props(dms_info_t *info, const gchar
*container)
{
dms_server_data_t *data;
GDBusProxy *proxy;
GDBusProxyFlags flags;
if (!g_hash_table_lookup_extended(info->dmss, container, NULL, NULL)) {
printf("Container Object Found: %s\n", container);
/* We'll create these proxies synchronously. The server
is already started and we don't want to retrieve any
properties so it should be fast. Okay, we do want
to retrieve properties but we want to do so for all
interfaces and not just org.gnome.UPnP.MediaContainer2.
To do this we will need to call GetAll("").
*/
flags = G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES;
proxy = g_dbus_proxy_new_for_bus_sync(G_BUS_TYPE_SESSION,
flags, NULL,
DMS_INFO_SERVICE,
container,
DMS_INFO_PROPERTIES_IF,
NULL, NULL);
if (!proxy) {
printf("Unable to create Container Proxy for %s\n",
container);
} else {
data = prv_dms_server_data_new(proxy);
g_hash_table_insert(info->dmss, g_strdup(container),
data);
++info->async;
g_dbus_proxy_call(proxy, DMS_INFO_GET_ALL,
g_variant_new("(s)", ""),
G_DBUS_CALL_FLAGS_NONE, -1,
data->cancellable,
prv_get_props_cb,
info);
}
}
}
I want to make some change to this function in order to realize the search
function to retrieve the media files, the changing I've made are:
1 DMS_INFO_PROPERTIES_IF ------> org.gnome.UPnP.MediaContainer2
2 DMS_INFO_GET_ALL ---------> SearchObjectsEx
3 g_variant_new("(s)", ""), ----------->
g_variant_new("(s)", "Type
derivedfrom \"*\"", 0, 10, "[\"DisplayName\"]",
"-DisplayName"),
After I made these changes, within "prv_get_props_cb" call back function,
as for the function:
variant = g_dbus_proxy_call_finish(info->manager_proxy, res,
NULL);
"variant" always gives a "NULL" feedback.
There must be something wrong for what I did, could you give me some advice
about how to do this?
Thank you so much.
Regards!
Guanhua
5:40 p.m.
Hi Guanhua,
On 07/02/2013 06:54 PM, Guanhua Wang wrote:
...
I want to make some change to this function in order to realize the
search function to retrieve the media files, the changing I've made are:
1 DMS_INFO_PROPERTIES_IF ------> org.gnome.UPnP.MediaContainer2
2 DMS_INFO_GET_ALL ---------> SearchObjectsEx
3 g_variant_new("(s)", ""), ----------->
g_variant_new("(s)", "Type
derivedfrom \"*\"", 0, 10, "[\"DisplayName\"]",
"-DisplayName"),
I think there are two problems with your code.
Firstly, the search query is incorrect. From the looks of things you
are simply trying to retrieve the first 10 media objects on the server
sorted in reverse order of DisplayName. Is this correct? If so you can
simply use the search string "*"
Secondly, the parameters for Search are different for the parameters for
GetAll, so you need to change the signature of the GVariant argument you
pass to SearchObjectsEx. It should be something like this (Note I
haven't actually tested this)
const gchar *filters[] = {"DisplayName", NULL};
GVariant* filterv = g_variant_new_strv(filters, -1);
g_variant_new("(suu@ass)", "*", 0, 10, filterv,
"-DisplayName"),
This stuff is a real pain to do in C isn't it?
Best Regards,
Mark
10:13 a.m.
Dear Mark,
Thanks for the help, it is indeed painful to do this in C since I've known
nothing about glib and I have couple of more questions regarding the
dms-info.c file.
1. I made change like this :
g_variant_new("(s)", ""), ----->
g_variant_new("(suu@ass)", "Type
derivedfrom \"audio\"", 0, 3, filterv, "-DisplayName"),
and within prv_dump_container_props(GVariant *props) function (for
printing),
g_variant_iter_next(&iter, "{sv}", &key, &value)) ::
"{sv}" ------>
"a{sv}"
I got top three files' information, but the whole information shows up for
3 time like this:
([{'DisplayName': <'first'>}, {'DisplayName':
<'second'>}, {'DisplayName':
<'third'>}], 3)
([{'DisplayName': <'first'>}, {'DisplayName':
<'second'>}, {'DisplayName':
<'third'>}], 3)
([{'DisplayName': <'first'>}, {'DisplayName':
<'second'>}, {'DisplayName':
<'third'>}], 3)
which is weird. And also I got notification like this:
GLib-CRITICAL **: g_variant_unref: assertion `value->ref_count > 0' failed
Do you know how to fix this one?
2. When I tried to compile the dms-info.c file individually like this:
gcc dms-info.c -o test `pkg-config --cflags --libs glib-2.0`
there is a lot of "undefined reference " errors like:
/tmp/ccQth59A.o: In function `prv_dms_info_free':
dms-info.c:(.text+0xa3): undefined reference to `g_object_unref'
dms-info.c:(.text+0xf4): undefined reference to `g_object_unref'
more detail was added in the attachment, do you know what is the problem
and how to compile the dms-info.c individually?
Any help would be most appreciated!
Regards,
Guanhua Wang
On Wed, Jul 3, 2013 at 12:40 AM, Mark Ryan <mark.d.ryan(a)linux.intel.com>wrote:
Hi Guanhua,
On 07/02/2013 06:54 PM, Guanhua Wang wrote:
...
> I want to make some change to this function in order to realize the
> search function to retrieve the media files, the changing I've made are:
> 1 DMS_INFO_PROPERTIES_IF ------> org.gnome.UPnP.MediaContainer2
> 2 DMS_INFO_GET_ALL ---------> SearchObjectsEx
> 3 g_variant_new("(s)", ""), ----------->
g_variant_new("(s)", "Type
> derivedfrom \"*\"", 0, 10, "[\"DisplayName\"]",
"-DisplayName"),
>
I think there are two problems with your code.
Firstly, the search query is incorrect. From the looks of things you are
simply trying to retrieve the first 10 media objects on the server sorted
in reverse order of DisplayName. Is this correct? If so you can simply
use the search string "*"
Secondly, the parameters for Search are different for the parameters for
GetAll, so you need to change the signature of the GVariant argument you
pass to SearchObjectsEx. It should be something like this (Note I haven't
actually tested this)
const gchar *filters[] = {"DisplayName", NULL};
GVariant* filterv = g_variant_new_strv(filters, -1);
g_variant_new("(suu@ass)", "*", 0, 10, filterv,
"-DisplayName"),
This stuff is a real pain to do in C isn't it?
Best Regards,
Mark
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dLeyna(a)lists.01.org
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10:26 a.m.
Hi Mark,
Thanks for the help, it is indeed painful to do this in C since I've known
nothing about glib and I have couple of more questions regarding the
dms-info.c file.
1. I made change like this :
g_variant_new("(s)", ""), ----->
g_variant_new("(suu@ass)", "Type
derivedfrom \"audio\"", 0, 3, filterv, "-DisplayName"),
and within prv_dump_container_props(GVariant *props) function (for
printing),
g_variant_iter_next(&iter, "{sv}", &key, &value)) ::
"{sv}" ------>
"a{sv}"
I got top three files' information, but the whole information shows up for
3 time like this:
([{'DisplayName': <'first'>}, {'DisplayName':
<'second'>}, {'DisplayName':
<'third'>}], 3)
([{'DisplayName': <'first'>}, {'DisplayName':
<'second'>}, {'DisplayName':
<'third'>}], 3)
([{'DisplayName': <'first'>}, {'DisplayName':
<'second'>}, {'DisplayName':
<'third'>}], 3)
which is weird. And also I got notification like this:
GLib-CRITICAL **: g_variant_unref: assertion `value->ref_count > 0' failed
Do you know how to fix this one?
2. When I tried to compile the dms-info.c file individually like this:
gcc dms-info.c -o test `pkg-config --cflags --libs glib-2.0`
there is a lot of "undefined reference " errors like:
/tmp/ccQth59A.o: In function `prv_dms_info_free':
dms-info.c:(.text+0xa3): undefined reference to `g_object_unref'
dms-info.c:(.text+0xf4): undefined reference to `g_object_unref'
dms-info.c:(.text+0x26a): undefined reference to
`g_dbus_proxy_get_object_path'
dms-info.c:(.text+0x2a9): undefined reference to
`g_cancellable_is_cancelled'
dms-info.c:(.text+0x2f0): undefined reference to `g_dbus_proxy_call_finish'
do you know what is the problem and how to compile the dms-info.c
individually?
Any help would be most appreciated!
Regards,
Guanhua Wang
On Wed, Jul 3, 2013 at 12:40 AM, Mark Ryan <mark.d.ryan(a)linux.intel.com>wrote:
Hi Guanhua,
On 07/02/2013 06:54 PM, Guanhua Wang wrote:
...
> I want to make some change to this function in order to realize the
> search function to retrieve the media files, the changing I've made are:
> 1 DMS_INFO_PROPERTIES_IF ------> org.gnome.UPnP.MediaContainer2
> 2 DMS_INFO_GET_ALL ---------> SearchObjectsEx
> 3 g_variant_new("(s)", ""), ----------->
g_variant_new("(s)", "Type
> derivedfrom \"*\"", 0, 10, "[\"DisplayName\"]",
"-DisplayName"),
>
I think there are two problems with your code.
Firstly, the search query is incorrect. From the looks of things you are
simply trying to retrieve the first 10 media objects on the server sorted
in reverse order of DisplayName. Is this correct? If so you can simply
use the search string "*"
Secondly, the parameters for Search are different for the parameters for
GetAll, so you need to change the signature of the GVariant argument you
pass to SearchObjectsEx. It should be something like this (Note I haven't
actually tested this)
const gchar *filters[] = {"DisplayName", NULL};
GVariant* filterv = g_variant_new_strv(filters, -1);
g_variant_new("(suu@ass)", "*", 0, 10, filterv,
"-DisplayName"),
This stuff is a real pain to do in C isn't it?
Best Regards,
Mark
______________________________**_________________
dLeyna mailing list
dLeyna(a)lists.01.org
https://lists.01.org/mailman/**listinfo/dleyna<https://lists.01.org/ma...
5:59 p.m.
Hi Guanhua,
On 07/04/2013 02:26 AM, Guanhua Wang wrote:
Hi Mark,
Thanks for the help, it is indeed painful to do this in C since I've
known nothing about glib and I have couple of more questions regarding
the dms-info.c file.
1. I made change like this :
g_variant_new("(s)", ""), ----->
g_variant_new("(suu@ass)", "Type
derivedfrom \"audio\"", 0, 3, filterv, "-DisplayName"),
and within prv_dump_container_props(GVariant *props) function (for
printing),
g_variant_iter_next(&iter, "{sv}", &key, &value)) ::
"{sv}"
------> "a{sv}"
I got top three files' information, but the whole information shows up
for 3 time like this:
([{'DisplayName': <'first'>}, {'DisplayName':
<'second'>},
{'DisplayName': <'third'>}], 3)
([{'DisplayName': <'first'>}, {'DisplayName':
<'second'>},
{'DisplayName': <'third'>}], 3)
([{'DisplayName': <'first'>}, {'DisplayName':
<'second'>},
{'DisplayName': <'third'>}], 3)
You need to check the documentation for SearchObjectsEx. It returns a
tuple containing an array and an integer. The array contains all the
requested objects and the integer indicates the total number of objects
in the DMS that match your search string. Each element in the array is
a dictionary of objects, so you need two loops, one for iterating
through the array elements and one to iterate through the properties of
each element. It should look something like this
while (g_variant_iter_next(&iter, "@a{sv}", &item)) {
(void) g_variant_iter_init(&iter2, item);
while (g_variant_iter_next(&iter2, "{&sv}", &key, &value)) {
formatted_value = g_variant_print(value, FALSE);
printf("%s: %s\n", key, formatted_value);
g_free(formatted_value);
g_variant_unref(value);
}
g_variant_unref(item);
}
which is weird. And also I got notification like this:
GLib-CRITICAL **: g_variant_unref: assertion `value->ref_count > 0' failed
Do you know how to fix this one?
2. When I tried to compile the dms-info.c file individually like this:
gcc dms-info.c -o test `pkg-config --cflags --libs glib-2.0`
there is a lot of "undefined reference " errors like:
/tmp/ccQth59A.o: In function `prv_dms_info_free':
dms-info.c:(.text+0xa3): undefined reference to `g_object_unref'
dms-info.c:(.text+0xf4): undefined reference to `g_object_unref'
dms-info.c:(.text+0x26a): undefined reference to
`g_dbus_proxy_get_object_path'
dms-info.c:(.text+0x2a9): undefined reference to
`g_cancellable_is_cancelled'
dms-info.c:(.text+0x2f0): undefined reference to `g_dbus_proxy_call_finish'
do you know what is the problem and how to compile the dms-info.c
individually?
You probably just need to add gio-2.0 to your call to pkg-config
Best Regards,
Mark
Any help would be most appreciated!
Regards,
Guanhua Wang
On Wed, Jul 3, 2013 at 12:40 AM, Mark Ryan <mark.d.ryan(a)linux.intel.com
<mailto:mark.d.ryan@linux.intel.com>> wrote:
Hi Guanhua,
On 07/02/2013 06:54 PM, Guanhua Wang wrote:
...
I want to make some change to this function in order to realize the
search function to retrieve the media files, the changing I've
made are:
1 DMS_INFO_PROPERTIES_IF ------> org.gnome.UPnP.MediaContainer2
2 DMS_INFO_GET_ALL ---------> SearchObjectsEx
3 g_variant_new("(s)", ""), ----------->
g_variant_new("(s)",
"Type
derivedfrom \"*\"", 0, 10,
"[\"DisplayName\"]", "-DisplayName"),
I think there are two problems with your code.
Firstly, the search query is incorrect. From the looks of things
you are simply trying to retrieve the first 10 media objects on the
server sorted in reverse order of DisplayName. Is this correct? If
so you can simply use the search string "*"
Secondly, the parameters for Search are different for the parameters
for GetAll, so you need to change the signature of the GVariant
argument you pass to SearchObjectsEx. It should be something like
this (Note I haven't actually tested this)
const gchar *filters[] = {"DisplayName", NULL};
GVariant* filterv = g_variant_new_strv(filters, -1);
g_variant_new("(suu@ass)", "*", 0, 10, filterv,
"-DisplayName"),
This stuff is a real pain to do in C isn't it?
Best Regards,
Mark
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